Amber Alert still active for three missing Shelby Co. children

Ivan Alvarado(Source: National Center for Missing and Exploited Children)

Paola Alvarado (Source: National Center for Missing and Exploited Children)

Viviana Alvarado (Source: National Center for Missing and Exploited Children)

SHELBY COUNTY, TX (KLTV) -

A National Amber Alert issued on Sunday for three Shelby County children who went missing on Thursday is still active on Monday afternoon.

Ivan, Paola and Viviana Alvarado were last seen getting into a newer-model Cadillac Escalade on Thursday, January 23 in Tenaha. They may be in the company of an adult male.

Paola, is a 1-year-old girl and has brown hair and black eyes. Ivan, 2 years old, has black hair and brown eyes. He is about 3 feet tall and weighs 20 pound. Viviana is a 16-year-old girl. She has black hair and brown eyes and is 5 feet, 6 inches tall and weighs 160 pounds. Paola is Viviana's daughter.

Shelby County deputies said the trio all disappeared "presumably together."

Anyone with information is asked to call authorities immediately. You can also call 1-800-THE-LOST with any information concerning their disappearance.Copyright 2014 KLTV. All rights reserved.